Ive got a stock 97 Subaru Impreza. The stock (minus a new head unit, that im goign to replace anyways) system in my car sounds ok, but I want my system to sound very good with nice bass.. I DONT want too much bass, like in most system with a subwoofer.. I jsut want it to sound clear and good. I dont know very much about car stereo, and I dont know waht to buy. I figure Ill have to replace the 4 6.5 speakers (1 in each door) Im afraid if I replace the speakers, it wont make very much of a difference.. do I need any other components? Any system setup suggestions?